actiniarian Actiniaria • actinic · · · Info · Definitions · Synonyms · Characters · · actiniarian · · Text Latin · · Script 11 · · Length Definitions · · · (noun) any sea anemone or related animal. Synonyms: actinia, actinian. · · Noun Definition 1 Synonyms · · · actinia · · Synonym 1 actinian · · Synonym 2 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074